Silver antoninianus, 23mm, 3.96gm, issued AD 249-251 Rome mint.
Obv: IMP C M Q TRAIANVS DECIVS AVG, Radiate, draped, cuirassed bust right.
Rev: ADVENTVS AVG, Decius, in military attire, on horse prancing left, raising hand and holding sceptre.
References: Sear 9366, RIC 11b, RSC 4.
Issue commemorates Decius' arrival in Rome after defeating Philip in northern Italy in AD 249.